{ "schemaVersion": "gships-review-packet-1", "packetId": "systems:structures-shielding", "stableId": "structures-shielding", "family": "systems", "slug": "structures-shielding", "title": "Structures, habitats & shielding", "status": "prepared-human-review-not-started", "release": { "releaseId": "public-alpha-2026-07-26-research-visuals-r14", "sourceCommit": "3eb036fce3d711336c8c605625895e8a2e799ab0", "corpusGeneratedAt": "2026-07-25", "frozenAt": "2026-07-26T22:50:50.000Z", "canonicalOrigin": "https://gships.dammonburden.com" }, "paths": { "human": "/review/systems/structures-shielding", "family": "/review/systems", "packet": "/review-packets/systems/structures-shielding.21f7b3a82d4c7967.json", "decisionTemplate": "/review-packets/systems/structures-shielding.21f7b3a82d4c7967.decision-template.json", "worksheet": "/review-packets/systems/structures-shielding.21f7b3a82d4c7967.worksheet.md", "byFingerprint": "/review-packets/by-fingerprint/21f7b3a82d4c79678727d15f4c9f4e7ae8f04d9c7769e52efeb56b9f082a961f.json" }, "boundary": "Prepared review packet; human review has not started. This packet is not a completed review, endorsement, reviewer appointment, partnership, or authorization to act.", "governingPolicies": [ { "id": "policy-editorial-governance-001", "version": "0.1.0", "path": "/editorial-policy", "recordType": "governing-policy", "fingerprint": "1f6a1f823e8bfe891b6a707c5dce2ee2337c0bb7d915b48d6060ca82b8da1b47", "snapshot": { "id": "policy-editorial-governance-001", "version": "0.1.0", "status": "foundation-policy-controls-not-yet-staffed", "adoptedForFoundation": "2026-07-25", "title": "Editorial governance and independent review", "publisher": "GShips Project", "maintainer": "Dammon Burden", "publisherInterest": "The maintainer intends to explore a commercial venture based on some GShips work. No entity, outside funding, customer, sponsor, or indexed-organization relationship currently exists.", "currentBoundary": "No independent domain reviewer or review council is currently appointed. Foundation records and outlines may not be represented as independently reviewed.", "reviewerSelection": [ "Publish the reviewer’s name, relevant credentials or lived expertise, review scope, compensation status, and declared conflicts with consent.", "Select for the actual claim domain rather than general prestige; include affected-community and disability-led expertise where rights or access are involved.", "Do not treat an employee, investor, customer, sponsor, source author, or directly supervised collaborator as independent for the affected claim." ], "reviewProcess": [ "Provide the exact claim, sources, locators, assumptions, counterevidence, transfer limits, and proposed evidence dimensions.", "Record approve, revise, contest, or reject at claim level; silence and event attendance never count as review.", "Publish material minority findings and the editor’s reasoned response.", "High-consequence medical, reproductive, nuclear, radiation, cybersecurity, governance, and dual-use claims require two qualified independent reviewers with complementary scopes.", "A reviewer may recuse at any time; unresolved conflicts or missing expertise block the reviewed label." ], "appealAndCorrection": [ "A correction receives a reference identifier and triage record; safety-critical allegations receive priority.", "A material editorial decision may be appealed to a reviewer not involved in the original decision once such a panel exists.", "Substantive reversals, unresolved disputes, and removed conclusions receive a dated public record that protects reporter privacy.", "No sponsor, customer, founder, or reviewer may purchase, suppress, or unilaterally assign an evidence grade." ], "publicationGate": "Public 1.0 requires named review coverage across every Academy track, documented high-consequence two-person review, a material-corrections log, reviewer conflict records, and an operating appeal path.", "correctionPath": "/corrections" } }, { "id": "policy-dual-use-001", "version": "0.1.0", "path": "/dual-use", "recordType": "governing-policy", "fingerprint": "81637e2849f9c0866d23f7174eb9a2ce522b86313167ebf5022fca122d6e506c", "snapshot": { "id": "policy-dual-use-001", "version": "0.1.0", "status": "planned-controls-not-yet-operational", "adoptedForFoundation": "2026-07-25", "title": "Civil, defensive, and rights-preserving use boundary", "summary": "GShips may research safety, resilience, logistics, communications, recovery, and cyber defense only within explicit end-use, rights, and independent-review controls. Calling an activity defensive is never sufficient by itself.", "scopeTrigger": "Apply dual-use review before accepting or materially advancing customer, funder, collaborator, operational, procurement, or publication-sensitive work whose capability, data, end use, or transfer could reasonably enable a prohibited use. Public non-actionable education still follows prohibited-content and sensitive-publication controls.", "allowedInPrinciple": [ "Safety engineering and independently assessed protection", "Resilience, graceful degradation, recovery, and disaster response", "Civil logistics, maintenance, communications, and knowledge continuity", "Cyber defense, secure software, incident response, and recovery", "Rights-preserving health, accessibility, ecology, education, and governance research" ], "prohibited": [ "Identification, tracking, prioritization, or engagement of people or assets for force, weapons, repression, or offensive operations; safety navigation, astronomy, collision avoidance, search and rescue, and independently governed planetary defense are not prohibited by this clause", "Weapons command-and-control or targeting support", "Offensive access, persistence, exploitation, or destructive cyber payloads", "Mass surveillance, biometric repression, or political-control systems", "Autonomous force application", "Coercive reproductive, medical, genetic, disability, or civic control", "Nonconsensual experimentation or treating residents as research instruments" ], "reviewRequiredBeforeAnyRelevantWork": [ "Customer, funder, collaborator, jurisdiction, beneficial-owner, and end-use screening", "Export-control and sanctions review by qualified counsel when applicable", "Written scope, allowed-use, prohibited-use, audit, termination, and incident clauses", "Independent stop-work authority with a named alternate and founder recusal", "Sensitive-publication and information-hazard review", "Whistleblowing, escalation, incident response, appeal, and anti-retaliation paths", "Aggregate transparency reporting that protects legitimate privacy and security" ], "currentBoundary": "No screening body, independent stop-work authority, contractual controls, or appeal body currently exists. Therefore no relevant customer, defense, dual-use, or operational engagement is authorized by this policy.", "changeControl": "Material changes require a dated public rationale, independent review, and may not be approved by the founder alone.", "correctionPath": "/corrections" } } ], "reviewContract": { "questions": [ { "id": "question-1", "text": "Does each evidence basis, readiness level, confidence level, rationale, and locator match the frozen sources?", "required": true }, { "id": "question-2", "text": "Are dependencies, failure modes, precursors, unknowns, Earthside benefits, and the stop gate technically and ethically bounded?", "required": true }, { "id": "question-3", "text": "Which conclusion should be approved, revised, contested, rejected, or recused from at its current fingerprint?", "required": true } ], "exclusions": [ "A system packet is not a complete spacecraft design, feasibility proof, safety case, or launch authorization.", "Context sources do not become direct support unless the record says so with an exact locator and relation." ], "requestedScopeCodes": [ "information-science", "radiation-health-physics", "structures-safety", "systems-engineering" ], "dispositions": [ "approve", "revise", "contest", "reject", "recuse" ], "prohibitedInputs": [ "private legal names or contact details", "identity documents or raw credential files", "accessibility or medical records", "confidential conflict evidence", "classified, export-controlled, proprietary, or exploit material" ], "freshness": { "maximumDecisionAgeFromFreezeDays": 365, "eventOccurrenceRule": "Not applicable to this packet family." }, "completionRule": "Every primary record must receive the required number of valid, current-fingerprint approvals; 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this bounded standards survey did not identify one standard covering that combination.", "currentState": [ "Crewed pressure modules, expandable structures, MMOD shields, and human-factors standards are operational in Earth orbit.", "Rotating-habitat gravity follows well-understood physics, but lifetime comfort and developmental biology have not been validated.", "Spaceflight standards focus on small groups of healthy professional adults rather than a diverse civil population." ], "unknowns": [ "Safe gravity level, rotation rate, gradient, and exposure for pregnancy, childhood, aging, and disability are unknown.", "Large crew-bearing rotating pressure interfaces integrated with habitation utilities, changing mass distributions, civil evacuation, and locally sustained century-scale maintenance remain unvalidated.", "Passive GCR shielding is mass-intensive; active shielding is experimental and adds new failure hazards." ], "earthBenefits": [ "Accessible, reconfigurable, quiet, low-toxicity interiors improve hospitals, shelters, submarines, and polar stations.", "Multifunctional panels can combine structure, thermal transport, sensing, radiation moderation, and repairability." ], "dependencies": [ "power-thermal", "health-medicine", "human-factors" ], "gate": "Require full-scale human-in-the-loop mockups, diverse-body accessibility review, fire/refuge tests, and long-duration rotating-environment evidence.", "sources": [ { "title": "NASA-STD-3001 Volume 2", "url": "https://standards.nasa.gov/standard/NASA/NASA-STD-3001_VOL_2", "kind": "Primary or institutional source" }, { "title": "NASA Human Integration Design Handbook", "url": "https://www.nasa.gov/organizations/ochmo/human-integration-design-handbook/", "kind": "Primary or institutional source" }, { "title": "NASA Human Rating Guidance", "url": "https://www.nasa.gov/human-rating-guidance/", "kind": "Primary or institutional source" } ], "failureModes": [ "Fatigue, creep, seal aging, debris impact, or undetected corrosion propagates through a pressure boundary.", "Rotation hardware or mass imbalance creates vibration, bearing, control, and evacuation hazards." ], "precursors": [ "Long-duration pressure-vessel and material-exposure programs on stations, the Moon, and uncrewed orbital platforms.", "Human-rated rotating-habitat demonstrations that validate balance, access, repair, and safe spin transitions." ] } }, { "recordType": "claim", "recordId": "claim-04-01", "title": "A worldship would combine a pressure vessel, rotating machine, city, hospital, school, farm, factory, and refuge; this bounded standards survey did not identify one standard covering that combination.", "publicPath": "/claims/claim-04-01", "recordFingerprint": "9a7847157b8292a05f097d423f7ec83cec730c4e9be5d8f54bd3dd1490d570a0", "reviewRequirements": { "minimumIndependentApprovals": 2, "highConsequenceDomains": [ "fire", "medical", "spacecraft-safety", "structural-safety" ], "requiredDomainCodes": [ "clinical-health" ], "requiredComplementaryScopeGroups": [ { "id": "domain-method", "scopeClass": "domain-method", "oneOf": [ "clinical-health", "radiation-health-physics", "structures-safety" ] }, { "id": "rights-public-interest", "scopeClass": "rights-public-interest", "oneOf": [ "affected-public-rights" ] } ], "unresolvedNegativeFindingBlocksPublication": true }, "referenceIds": [ "src-cu-nasa-std-3001-v2", "src-hp-ecss-pressurized-hardware-2025", "src-hp-nasa-std-5019", "src-hp-nasa-std-6001" ], "snapshot": { "id": "claim-04-01", "systemSlug": "structures-shielding", "kind": "thesis", "statementRef": { "field": "thesis" }, "statement": "A worldship would combine a pressure vessel, rotating machine, city, hospital, school, farm, factory, and refuge; this bounded standards survey did not identify one standard covering that combination.", "statementFingerprint": "360c1b10bdb199977d8ece4bb8c865b78226648cc988f66aa4c33c201b8a4192", "assessment": { "status": "editorial-assessed", "basis": "observed", "readiness": "major-scale-up", "confidence": "supported", "rationale": "The bounded standards survey found NASA and ECSS documents that separately govern human factors, pressure and fracture control, materials, fire, atmosphere, operations, and pressurized hardware. Their documented scopes, exclusions, and interfaces do not establish one qualified standard for a rotating, self-maintaining civil settlement that also functions as housing, healthcare, education, agriculture, industry, and refuge. This is a dated search conclusion, not proof of universal absence." }, "citations": [ { "sourceId": "src-cu-nasa-std-3001-v2", "locator": "Scope and Sections 6–8 on environmental health, habitability, human-system interfaces, translation, emergency operations, and maintenance.", "relation": "direct-normative-authority" }, { "sourceId": "src-hp-nasa-std-5019", "locator": "Document scope and Sections 6–7 on fracture-control classification, pressure systems, habitable volumes, and rotating hardware.", "relation": "scope-boundary" }, { "sourceId": "src-hp-nasa-std-6001", "locator": "Document scope and Sections 4–7 on configuration-sensitive material flammability, offgassing, compatibility, wiring, smoke, and heat-release evaluation.", "relation": "scope-boundary" }, { "sourceId": "src-hp-ecss-pressurized-hardware-2025", "locator": "Current standard scope, pressurized-hardware classes, structural verification requirements, exclusions, and incomplete interface coverage.", "relation": "direct-observation" } ], "contextSourceIds": [ "core-04-1", "core-04-2", "core-04-3" ], "editorialProvenance": { "status": "substantive-editorial-review", "reviewers": [ "GShips Project editorial synthesis" ], "conflicts": [ "The publisher's planned habitat-assurance venture could benefit commercially from emphasizing the absence of an integrated civil-habitat standard; no source, sponsor, customer, or indexed-organization relationship is known." ] }, "whatWouldChange": "An independently maintained standard that explicitly integrates rotating pressure structures, diverse civil habitability, healthcare, agriculture, industry, refuge, inspection, repair, and multidecade lifecycle assurance would narrow or supersede this claim; a collection of separately applicable crew standards would not.", "highConsequence": [ "structural-safety", "fire", "medical", "spacecraft-safety" ] } }, { "recordType": "claim", "recordId": "claim-04-02", "title": "Crewed pressure modules, expandable structures, MMOD shields, and human-factors standards are operational in Earth orbit.", "publicPath": "/claims/claim-04-02", "recordFingerprint": "fe2024a7a6332445b4c9fa13bd23ed46cf625cdca708727f199bb88d66b5a4f4", "reviewRequirements": { "minimumIndependentApprovals": 2, "highConsequenceDomains": [ "spacecraft-safety", "structural-safety" ], "requiredDomainCodes": [], "requiredComplementaryScopeGroups": [ { "id": "domain-method", "scopeClass": "domain-method", "oneOf": [ "radiation-health-physics", "structures-safety" ] }, { "id": "rights-public-interest", "scopeClass": "rights-public-interest", "oneOf": [ "affected-public-rights" ] } ], "unresolvedNegativeFindingBlocksPublication": true }, "referenceIds": [ "src-cu-nasa-std-3001-v2", "src-hp-nasa-beam-techport", "src-hp-nasa-mmod-handbook" ], "snapshot": { "id": "claim-04-02", "systemSlug": "structures-shielding", "kind": "current state", "statementRef": { "field": "currentState", "index": 0 }, "statement": "Crewed pressure modules, expandable structures, MMOD shields, and human-factors standards are operational in Earth orbit.", "statementFingerprint": "b3f79be1f46d1dbe48f0179a1ffd135d19fff8ec288412e6a776f322e41a2e7a", "assessment": { "status": "editorial-assessed", "basis": "demonstrated", "readiness": "operational", "confidence": "strong", "rationale": "NASA records demonstrate operational pressure modules, an expandable human-rated volume on the ISS, and tested MMOD protection methods. NASA-STD-3001 Volume 2 supplies current human-system requirements rather than demonstration evidence. Operational applies only inside the qualified low-Earth-orbit environments, missions, configurations, and support systems." }, "citations": [ { "sourceId": "src-hp-nasa-beam-techport", "locator": "Project objectives and results for deployment, pressure retention, structural performance, radiation sensing, inspection, and ISS operation.", "relation": "direct-demonstration" }, { "sourceId": "src-hp-nasa-mmod-handbook", "locator": "Chapters 2–9 on MMOD environments, risk, shield configurations, ballistic limits, tests, sensors, and operations.", "relation": "direct-demonstration" }, { "sourceId": "src-cu-nasa-std-3001-v2", "locator": "Active Revision E scope and Sections 6–8 defining requirements for current human-rated systems.", "relation": "direct-normative-authority" } ], "contextSourceIds": [ "core-04-1", "core-04-2", "core-04-3" ], "editorialProvenance": { "status": "substantive-editorial-review", "reviewers": [ "GShips Project editorial synthesis" ], "conflicts": [ "The planned venture may benefit from treating proven spacecraft subsystems as inputs to a larger assurance product; this assessment therefore limits 'operational' to each source's qualified regime and claims no NASA relationship." ] }, "whatWouldChange": "Evidence that any named capability is not operational in its stated current regime would lower confidence. Full-scale operation of the combined capabilities in a long-duration rotating settlement would raise the integrated readiness beyond this bounded assessment.", "highConsequence": [ "structural-safety", "spacecraft-safety" ] } }, { "recordType": "claim", "recordId": "claim-04-03", "title": "Rotating-habitat gravity follows well-understood physics, but lifetime comfort and developmental biology have not been validated.", "publicPath": "/claims/claim-04-03", "recordFingerprint": "e51a5ea8db7f81ecc1155d7627f16662ef6277e202fd8cbc7b60af8b843c4f5b", "reviewRequirements": { "minimumIndependentApprovals": 2, "highConsequenceDomains": [ "medical", "spacecraft-safety" ], "requiredDomainCodes": [ "clinical-health" ], "requiredComplementaryScopeGroups": [ { "id": "domain-method", "scopeClass": "domain-method", "oneOf": [ "clinical-health", "radiation-health-physics", "structures-safety" ] }, { "id": "rights-public-interest", "scopeClass": "rights-public-interest", "oneOf": [ "affected-public-rights" ] } ], "unresolvedNegativeFindingBlocksPublication": true }, "referenceIds": [ "src-cu-nasa-std-3001-v2", "src-hc-matsumura-iss-male-mice-2019", "src-hp-nasa-ag-evidence-report", "src-hp-nasa-physics-artificial-gravity" ], "snapshot": { "id": "claim-04-03", "systemSlug": "structures-shielding", "kind": "current state", "statementRef": { "field": "currentState", "index": 1 }, "statement": "Rotating-habitat gravity follows well-understood physics, but lifetime comfort and developmental biology have not been validated.", "statementFingerprint": "83e0d39aecefed5284e07c3344d0044d41954c89e2623cfd1e4233b740c98f28", "assessment": { "status": "editorial-assessed", "basis": "demonstrated", "readiness": "early-research", "confidence": "strong", "rationale": "Rotational kinematics and short-duration human responses have established theory and experimental evidence. NASA's evidence review nevertheless identifies unresolved prescription, tolerance, and physiological questions, while no cited study covers continuous lifetime exposure, gestation, development, or a multigenerational population." }, "citations": [ { "sourceId": "src-hp-nasa-physics-artificial-gravity", "locator": "Sections on rotational acceleration, radius, rate, gravity gradient, Coriolis effects, and artificial-gravity vehicle concepts.", "relation": "direct-demonstration" }, { "sourceId": "src-hp-nasa-ag-evidence-report", "locator": "Evidence review of artificial-gravity exposure, countermeasure hypotheses, rotation tolerance, study limitations, and research gaps.", "relation": "direct-demonstration" }, { "sourceId": "src-cu-nasa-std-3001-v2", "locator": "Applicability to current spacefaring crews and human-rated systems rather than continuous lifetime rotating habitation.", "relation": "scope-boundary" }, { "sourceId": "src-hc-matsumura-iss-male-mice-2019", "locator": "Adult male mouse artificial-1g and microgravity comparison aboard ISS; bounded adult-animal evidence rather than a rotating human habitat or lifetime developmental study.", "relation": "scope-boundary" } ], "contextSourceIds": [ "core-04-1", "core-04-2", "core-04-3" ], "editorialProvenance": { "status": "substantive-editorial-review", "reviewers": [ "GShips Project editorial synthesis" ], "conflicts": [ "The publisher may benefit from describing artificial-gravity evidence gaps as testbed opportunities; the assessment therefore separates established mechanics from unvalidated lifetime biology." ] }, "whatWouldChange": "Continuous, independently reproduced rotating-habitat evidence across years and multiple life stages—including conception, development, aging, disability, cross-axis motion, and transitions—would raise biological readiness; adverse developmental or chronic outcomes would narrow acceptable regimes or reject continuous rotation.", "highConsequence": [ "medical", "spacecraft-safety" ] } }, { "recordType": "claim", "recordId": "claim-04-04", "title": "Spaceflight standards focus on small groups of healthy professional adults rather than a diverse civil population.", "publicPath": "/claims/claim-04-04", "recordFingerprint": "1eb3d3aff2f3a29fa77b83be896f36ae499c78dc368c28230a8fb93e6010ac30", "reviewRequirements": { "minimumIndependentApprovals": 2, "highConsequenceDomains": [ "disability", "medical", "spacecraft-safety" ], "requiredDomainCodes": [ "clinical-health" ], "requiredComplementaryScopeGroups": [ { "id": "domain-method", "scopeClass": "domain-method", "oneOf": [ "clinical-health", "radiation-health-physics", "structures-safety" ] }, { "id": "rights-public-interest", "scopeClass": "rights-public-interest", "oneOf": [ "affected-public-rights" ] } ], "unresolvedNegativeFindingBlocksPublication": true }, "referenceIds": [ "src-cu-nasa-std-3001-v2", "src-pa-nasa-chapea", "src-po-nasa-hidh" ], "snapshot": { "id": "claim-04-04", "systemSlug": "structures-shielding", "kind": "current state", "statementRef": { "field": "currentState", "index": 2 }, "statement": "Spaceflight standards focus on small groups of healthy professional adults rather than a diverse civil population.", "statementFingerprint": "612355e4c92e509eb8b9d42a14fd2cd04b6ac65410b166ed5cf0b5d0d78de0d6", "assessment": { "status": "editorial-assessed", "basis": "observed", "readiness": "operational", "confidence": "strong", "rationale": "NASA's active human-system standard protects spacefaring crews in human-spaceflight programs, and current analog programs recruit bounded adult crews for finite Earth-based missions. Those scopes do not represent infants, lifelong residents, ordinary civil disability and aging, or a self-governing population." }, "citations": [ { "sourceId": "src-cu-nasa-std-3001-v2", "locator": "Document scope, crew-health purpose, and requirements for defined human-rated systems and spacefaring crews.", "relation": "direct-observation" }, { "sourceId": "src-pa-nasa-chapea", "locator": "Adult applicant and crew criteria, finite Earth-based mission duration, simulated stressors, and research goals.", "relation": "direct-observation" }, { "sourceId": "src-po-nasa-hidh", "locator": "Handbook scope, human-system integration process, anthropometry, task design, workload, and habitability guidance.", "relation": "scope-boundary" } ], "contextSourceIds": [ "core-04-1", "core-04-2", "core-04-3" ], "editorialProvenance": { "status": "substantive-editorial-review", "reviewers": [ "GShips Project editorial synthesis" ], "conflicts": [ "GShips' stated civil-population and disability-inclusive framing may favor broader requirements than current astronaut programs; no affiliation with NASA or an analog program is implied." ] }, "whatWouldChange": "A current operational standard and evidence base explicitly covering an unselected civil population across birth, disability, illness, aging, family life, and permanent residence would narrow this distinction; adding a small number of demographic categories to astronaut selection would not.", "highConsequence": [ "medical", "disability", "spacecraft-safety" ] } }, { "recordType": "claim", "recordId": "claim-04-05", "title": "No reviewed evidence establishes a safe gravity level, rotation rate, gradient, and exposure regime spanning pregnancy, childhood, aging, and disability.", "publicPath": "/claims/claim-04-05", "recordFingerprint": "18ee78209e4602b1ccc715ee1c4472eb0a06bae70abb80a6b2cf90d481856ecf", "reviewRequirements": { "minimumIndependentApprovals": 2, "highConsequenceDomains": [ "disability", "medical", "spacecraft-safety" ], "requiredDomainCodes": [ "clinical-health" ], "requiredComplementaryScopeGroups": [ { "id": "domain-method", "scopeClass": "domain-method", "oneOf": [ "clinical-health", "radiation-health-physics", "structures-safety" ] }, { "id": "rights-public-interest", "scopeClass": "rights-public-interest", "oneOf": [ "affected-public-rights" ] } ], "unresolvedNegativeFindingBlocksPublication": true }, "referenceIds": [ "src-cu-nasa-std-3001-v2", "src-hc-matsumura-iss-male-mice-2019", "src-hp-nasa-ag-evidence-report", "src-hp-nasa-physics-artificial-gravity" ], "snapshot": { "id": "claim-04-05", "systemSlug": "structures-shielding", "kind": "unknown", "statementRef": { "field": "unknowns", "index": 0 }, "statement": "No reviewed evidence establishes a safe gravity level, rotation rate, gradient, and exposure regime spanning pregnancy, childhood, aging, and disability.", "statementFingerprint": "ddd3d9f7d63189d3198b6729a25a522031049d4c20dfa957dbc82bbc444416a1", "assessment": { "status": "editorial-assessed", "basis": "unknown", "readiness": "breakthrough-dependent", "confidence": "supported", "rationale": "Available sources describe artificial-gravity mechanics, short-duration exposure, countermeasure concepts, and incomplete human evidence. They do not establish a safe combination of gravity level, rotation rate, gradient, duration, transition schedule, and activity for pregnancy, childhood, aging, or diverse disabilities." }, "citations": [ { "sourceId": "src-hp-nasa-ag-evidence-report", "locator": "Human evidence review, physiological countermeasure rationale, exposure uncertainties, tolerance, and recommended research.", "relation": "direct-observation" }, { "sourceId": "src-hp-nasa-physics-artificial-gravity", "locator": "Gravity level, radius, rotation rate, gradient, Coriolis acceleration, motion, and architecture trade equations.", "relation": "direct-observation" }, { "sourceId": "src-cu-nasa-std-3001-v2", "locator": "Current human-system applicability and absence of a continuous artificial-gravity prescription for a civil lifetime.", "relation": "scope-boundary" }, { "sourceId": "src-hc-matsumura-iss-male-mice-2019", "locator": "Adult male mouse centrifuge experiment comparing artificial 1g with microgravity; no pregnancy, childhood, aging, disability, or human rotation evidence.", "relation": "scope-boundary" } ], "contextSourceIds": [ "core-04-1", "core-04-2", "core-04-3" ], "editorialProvenance": { "status": "substantive-editorial-review", "reviewers": [ "GShips Project editorial synthesis" ], "conflicts": [ "The planned venture could benefit from an expansive artificial-gravity research agenda; the claim is therefore limited to the absence of an established safe civil-lifetime prescription, not an assertion that no safe regime can exist." ] }, "whatWouldChange": "Ethically obtained, independently reproduced longitudinal evidence could establish bounded safe regimes by life stage, body, task, radius, rate, gradient, and transition. 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